Hello, I'm Johans.

$ ls ~/projects --sort=recent

johansneirap/renduo

Renduo

SaaS that turns the React components a team already maintains into a PDF-generation API: invoices, reports, and contracts from any backend with a single HTTP call, no separate template language to keep in sync.

• SaaS
• React
• TypeScript
• API

• 

  dashboard.png

• 

  docs.png

johansneirap/sorted-collections

Sorted Collections

Open-source library for JavaScript/TypeScript with SortedList, SortedSet, and SortedMap — zero runtime dependencies, inspired by Python's sortedcontainers.

• Open-source
• JavaScript
• Typescript

johansneirap/datoteca

Datoteca

TypeScript library for generating realistic and localized test data for Chile

• Open-source
• TypeScript
• JavaScript

johansneirap/falta-1

Falta 1

PWA made with React and TypeScript, it allows users to create and search for sports events in their city, it also has a chat system and a notification system.

• React
• TypeScript
• PWA
• Tailwind

johansneirap/revius

Revius

Lets users create and edit reviews about certain products on the internet, it also has the data of the reviews from other retailers websites. (Still in development)

• React
• Next.js
• Tailwind
• NestJS
• Prisma
• Postgres

$ cat package.json | jq .dependencies

• +HTML
• +CSS
• +JavaScript
• +TypeScript
• +React
• +Next.js
• +Node.js
• +Git
• +Tailwind
• +Prisma
• +MongoDB
• +Redux
• +GraphQL
• +Apollo
• +Express
• +PostgreSQL
• +Python
• +Django
• +Framer Motion

$ git log --graph --oneline --branches

1. 26ac4d2(HEAD -> scotiabank-chile)2026 - present

   Senior Software Engineer at Scotiabank Chile

   Remote, Villa Alemana, CL

   Frontend and backend software development, working on a data privacy project for backoffice, a web payment button, and a flow acquisition project focused on Agentic AI Development.

2. dfc26c8(bice-hipotecaria)2024 - 2026

   Senior Software Engineer | Tech Lead at BICE Hipotecaria

   Providencia, Santiago, CL

   I started by building Carpeta Digital, an internal system for managing credit-related documents, and led the migration of the authentication system from on-premise Keycloak to Auth0 for over 15,000 clients. Later, as Tech Lead, I led a team of 6 developers on integration projects during the Bice and Security merger, including rolling out the Toku payment gateway for over 30,000 clients.

3. 68a88cb(evalueserve-chile)2022 - 2023

   Senior Developer at Evalueserve Chile

   Viña del Mar, CL

   As a senior developer, I worked on full-stack applications for clients like Walmart US, Intuit India, and McDonald's US, integrating large amounts of data to build dashboards and advanced visualizations.

4. 4fa8326(evalueserve-chile)2021 - 2022

   Software Developer at Evalueserve Chile

   Viña del Mar, CL

   I worked as a full-stack developer on applications for clients like Diageo, Heineken, and Gates Ventures, focusing on data visualization and analytics dashboards for decision-making.

5. caa0b74(graduated-computer-science)2018 - 2021

   Graduated in Computer Science

   Viña del Mar, CL

   I graduated after 4 years of studying. I immediately found a job as a web developer.

6. 7222bc0(freelance-web-developer)2018 - 2021

   Freelance Web Developer

   Villa Alemana, CL

   I worked as a freelance web developer for about 3 years where I made a couple of web pages and sites, landing pages, and a user maintainer for a private server of Lineage 2 game. I also upskilled to the full stack.